Displaying 14 results from an estimated 14 matches for "randu".
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2017 Aug 14
4
Help creating the IBM Randu function
Dear all,
I am trying to learn functions in R and 3D plotting so I decided to try
to plot
the famous bad PRNG Randu from IBM(1).
However something is not correct in the function I have created.
First I define the function RANDU like this:
> RANDU <- function(num) { return (65539*num)%%(2^31) }
and test that it works for a seed of 1:
> RANDU(1)
[1] 65539
but if I want the next value in the sequ...
2017 Aug 14
0
Help creating the IBM Randu function
Please look at ?datasets::randu
for David Donoho's translation of RANDU into R.
On Mon, Aug 14, 2017 at 12:49 PM, Martin M?ller Skarbiniks Pedersen
<traxplayer at gmail.com> wrote:
> Dear all,
>
> I am trying to learn functions in R and 3D plotting so I decided to try
> to plot
> the famous bad PRNG R...
2017 Aug 14
0
Help creating the IBM Randu function
Hi Martin,
The corrected function would be
RANDU <- function(num) { return ((65539*num)%%(2^31)) }
You forgot the brackets for the return function.
Hence, what was returned was always (65539 * num)
On Mon, Aug 14, 2017 at 12:49 PM, Martin M?ller Skarbiniks Pedersen
<traxplayer at gmail.com> wrote:
> Dear all,
>
> I am tryi...
2002 Oct 10
1
Documentation for randu() (PR#2141)
Full_Name: Andrew J. Baczkowski
Version: 1.1.1, 1.5.0
OS: NT, unix
Submission from: (NULL) (129.11.159.161)
Help documentation for randu() has incorrect R code in Example.
Should replace line 4
seed <<- ((2^16) + 3) * seed)
by
seed <<- ((2^16) + 3) * seed) %% (2^31)
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ....
2010 Mar 31
2
Generative Topographic Map
...cuments and Settings/Monville/Alanine Dipeptide/DBP1/DHA"
setwd(inDir)
T <- read.table("DHA_TNH.txt")
L <- 3
X <- matrix(nrow=nrow(T),ncol=3,byrow=TRUE)
MU <- matrix(nrow=round(nrow(T)/5), ncol=L)
for(i in 1:ncol(X)) {
for(j in 1:nrow(X)) {
X[j,i] <- RANDU()
}
}
for(i in 1:ncol(MU)) {
for(j in 1:nrow(MU)) {
MU[j,i] <- RANDU()
}
}
sigma <-1
FI <- gtm_gbf(MU,sigma,X)
W <- gtm_ri(T,FI)
Y= FI%*%W
b = gtm_bi(Y)
lambda <- 0.001
for (m in 1:15) {
trnResult = gtm_trn(T, FI, W, lambda, 1, b, 2,quiet = TRUE, minSing =...
2011 Feb 02
4
testing randomness of random number generators with student t-test?
Hi, subject more or less says it all.
I freely admit to not having bothered to find some of the online papers
about method of testing the quality of random number generators -- but
in an idle moment I wondered what to expect from something like the
following:
randa<-runif(1000)
randb<-runif(1000)
t.test(randa,randb)$p.value
var.test(randa,randb)$p.value
[repeat ad nauseum]
Is the
2005 Feb 02
4
(no subject)
...1920-1939
precip Annual Precipitation in US Cities
presidents Quarterly Approval Ratings of US Presidents
pressure Vapor Pressure of Mercury as a Function of
Temperature
quakes Locations of Earthquakes off Fiji
randu Random Numbers from Congruential Generator
RANDU
rivers Lengths of Major North American Rivers
rock Measurements on Petroleum Rock Samples
sleep Student's Sleep Data
stack.loss (stackloss)...
2007 Oct 15
2
Need some help
Hi!
I'm taking a course that requires some programming background, but I'm a
complete novice in the field.
when asked to generate a list of 20 uniform random numbers, is it alright if
I put in >randu, and just copy-paste the first 20 numbers?? Or is there, as
I suspect, a better way of calling out exactly 20 uniform random numbers??
I'm also unable to solve the following problem:
We know that on average 30% of the customers who enter a store make a
purchase. Suppose 200
people enter the st...
1999 Apr 07
1
R-0.64.0 is released
...an load to specific environments.
o Sockets interface: make/read/write/close.socket()
o Function chull() for planar convex hulls
o pairs.formula() allows formula notations for scatter plot matrix.
o new dataset co2.
o documentation for datasets mtcars, plants, pressure, randu and sleep.
o the sunspots dataset is now monthly rather than annual.
BUG FIXES
o strsplit(), scan() and friends use a much larger char buffer
(still fixed size; this will change again)
o ts() allows a data-frame argument `data'.
o anova.lm handles singular models...
1999 Apr 07
1
R-0.64.0 is released
...an load to specific environments.
o Sockets interface: make/read/write/close.socket()
o Function chull() for planar convex hulls
o pairs.formula() allows formula notations for scatter plot matrix.
o new dataset co2.
o documentation for datasets mtcars, plants, pressure, randu and sleep.
o the sunspots dataset is now monthly rather than annual.
BUG FIXES
o strsplit(), scan() and friends use a much larger char buffer
(still fixed size; this will change again)
o ts() allows a data-frame argument `data'.
o anova.lm handles singular models...
2002 Nov 01
8
R-1.6.1 is released
...d strange things if
there were "%" characters in the deparsed expression (PR#2120).
o as.matrix.data.frame converted missings to "NA" not character NA.
(PR#2130)
o spec.pgram() was only interpolating zero freq for one series. (PR#2123)
o help(randu) had % unescaped in the example. (PR#2141)
o Making html links would fail if packages-head.html was not
writeable. (PR#2133)
o Sweave.sty was not installed to $R_HOME/share/texmf when
builddir != srcdir. On Windows backslashes in latex paths have
to be replaced...
2002 Nov 01
8
R-1.6.1 is released
...d strange things if
there were "%" characters in the deparsed expression (PR#2120).
o as.matrix.data.frame converted missings to "NA" not character NA.
(PR#2130)
o spec.pgram() was only interpolating zero freq for one series. (PR#2123)
o help(randu) had % unescaped in the example. (PR#2141)
o Making html links would fail if packages-head.html was not
writeable. (PR#2133)
o Sweave.sty was not installed to $R_HOME/share/texmf when
builddir != srcdir. On Windows backslashes in latex paths have
to be replaced...
2000 Feb 17
2
Installation of rpm file on Suse Linux 6.2 (PR#449)
...ibrary/base/R-ex/qraux.R action: create
D: file: /usr/local/lib/R/library/base/R-ex/quakes.R action: create
D: file: /usr/local/lib/R/library/base/R-ex/quantile.R action: create
D: file: /usr/local/lib/R/library/base/R-ex/quit.R action: create
D: file: /usr/local/lib/R/library/base/R-ex/randu.R action: create
D: file: /usr/local/lib/R/library/base/R-ex/range.R action: create
D: file: /usr/local/lib/R/library/base/R-ex/range.default.R action: create
D: file: /usr/local/lib/R/library/base/R-ex/rank.R action: create
D: file: /usr/local/lib/R/library/base/R-ex/read.fwf.R action:...
2002 Jul 11
1
dyn.load tcl/tk (PR#1774)
...html latex example
qraux text html latex example
quakes text html latex example
quantile text html latex example
quit text html latex example
randu text html latex example
range text html latex example
rank text html latex example
read.00Index text html latex
read.ftable text h...